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In the interrogation, Robert Durst admits to being high on meth during some of the filming of the interviews seen on "The Jinx." He also denies and then skirts around whether he killed Susan Berman. Carolyn Johnson reports for the NBC4 News on Monday, Dec.19, 2016.

(Published Thursday, April 27, 2017)

A Hollywood producer testified Wednesday that a friend claimed to have impersonated the first wife of real estate heir Robert Durst in a telephone call that prosecutors say took place after the wife was dead.

Lynda Obst, whose films include "Sleepless in Seattle" and "Interstellar," took the stand during a pre-trial hearing for Durst, who is charged with shooting Susan Berman in 2000 at her Los Angeles home.

Obst said that Berman, a mutual friend, confided that she had pretended to be Kathleen Durst in a 1982 telephone call to the Albert Einstein College of Medicine Center in New York.

A previous witness has said the woman claimed she was sick and couldn't make it to her first day of a clerkship in pediatrics.

Awaiting Secret Witness in Durst Trial

Fearing the worst, prosecutors in the 35-year-old case are having several key witnesses testify before Robert Durst's trial begins. Angie Crouch reports for the NBC4 News at 5 p.m on Wednesday, Feb. 15, 2017.

(Published Thursday, April 27, 2017)

Prosecutors contend that Kathleen Durst already was dead at that point.

Her body never was found but in March a judge in Surrogate's Court in Manhattan officially declared her dead.

Durst isn't charged with her murder but he is accused of killing Berman. Prosecutors contend that he was afraid she would implicate him to investigators looking into his wife's disappearance.

Durst, 74, has pleaded not guilty to murder. A Superior Court judge hasn't determined whether he will stand trial.

On Tuesday, another friend of Berman's, Miriam Barnes, told the court that years earlier, Berman had told her: "If anything ever happens to me, Bobby did it."

Barnes said she never went to police because she feared Durst could harm her.

Testimony Heard in Durst Case Before Trial Begins

Fearing the worst, prosecutors in the 35-year-old case are having several key witnesses testify before Robert Durst's trial begins. John Cadiz Klemack reports for the NBC4 News on Tuesday, February 14, 2017.

(Published Thursday, April 27, 2017)

Testimony is being taken from so-called secret witnesses whose names aren't made public until they appear in court.

Prosecutors have suggested that Durst, who is jailed and has health issues, could use some of his fortune to have witnesses killed. The defense has scoffed at the suggestion.

However, the witnesses' testimony is being video recorded for use in case they are not available for trial.